Answers by Roman Pfneudl
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Answers by Roman Pfneudl

Answers by Roman Pfneudl
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What is the simplest formula for a compound containing 0.50 mol na, 0.50 mol s, and 0.75 mol o?
answered Oct 15, 2018
3 votes
93.4k views
8. Which of the following body systems does the immune system rely on to provide the first line of defense against pathogens? A. integumentary system B. nervous system C. circulatory system D. endocrine
answered Oct 13, 2018
2 votes
97.0k views
Any rock exposed at Earth’s surface will undergo _____.
answered Aug 12, 2018
4 votes
171k views
Describe two structures that allow arthropods to breathe air.
answered Aug 6, 2018
4 votes
43.3k views
A person with blood group A produces antibodies against B. A person with blood group B produces antibodies against A. A person with blood group AB produces no antibodies. How can you explain this? A and
answered May 27, 2018
4 votes
232k views
How is the use of the word theory in science different from its more common use
answered Feb 19, 2018
1 vote
184k views
A dog starts chasing Gretchen. When her brain sends a signal to her muscles to run, which neurons are at work? sensory motor voluntary involuntary
answered Dec 6, 2017
6 votes
3.6k views
What was the purpose of setting up the Public Works Administration and the Works Progress Administration? A. to help industries plan production and curtail expenses B. to nationalize the government's control
answered Jun 3, 2017
4 votes
108k views
Which of the following statements gives evidence to support the conclusion that the Olmecs were a "mother culture" of the Mayas? The Olmecs were a war-like people. The Olmecs did not participate in human
answered Jan 29, 2017
5 votes
106k views
Which atom has the largest atomic radius? potassium rubidium Francium cesium
answered May 27, 2016
2 votes
54.9k views
What is the cube root of 159?
answered Mar 17, 2016
4 votes
172k views
B is between A and C. AB=2x+1, BC=3x-4, and AC=62. Find the value of 'x', and determine if B is a bisector.
answered Mar 8, 2016
1 vote
42.3k views
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